<!DOCTYPE html>
<html lang="zh-CN">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <script>
        const data = [
            { id: "01", name: "张大大", pid: "", job: "项目经理" },

            { id: "02", name: "小亮", pid: "01", job: "产品leader" },
            { id: "07", name: "小丽", pid: "02", job: "产品经理" },
            { id: "08", name: "大光", pid: "02", job: "产品经理" },

            { id: "03", name: "小美", pid: "01", job: "UIleader" },
            { id: "09", name: "小高", pid: "03", job: "UI设计师" },
            { id: "05", name: "老王", pid: "01", job: "测试leader" },
            { id: "06", name: "老李", pid: "01", job: "运维leader" },

            { id: "04", name: "老马", pid: "01", job: "技术leader" },
            { id: "10", name: "小刘", pid: "04", job: "前端工程师" },
            { id: "11", name: "小华", pid: "04", job: "后端工程师" },
            { id: "12", name: "小李", pid: "04", job: "后端工程师" },

            { id: "13", name: "小赵", pid: "05", job: "测试工程师" },
            { id: "14", name: "小强", pid: "05", job: "测试工程师" },
            { id: "15", name: "小涛", pid: "06", job: "运维工程师" }
        ]
        const treeData = []
        data.forEach(item => {
            // 顶级
            if (item.pid === '') {
                treeData.push([item])
            }
            // 父子级关系: 上级的 id 和下一级的 pid 相同,
           const children = data.filter(obj =>obj.pid === item.id)
           console.log(children);
           if (!children.length) return

           item.children = children
        })
        console.log(treeData);
    </script>
</body>

</html>